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- 저자 : Yiran Hu (검색결과 3 건)
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Yiran Wang,Chao Li,Shu Zhang,Leilei Xu,Xun Hu 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.110 No.-
Alcohols like ethanol and glycerol have been extensively investigated as potential feedstock for on-sitehydrogen production by steam reforming. The varied number of hydroxyl group in the alcohols inevitablyaffects the reaction intermediates generated and eventually properties of coke formed. In this study, fouralcohols (ethanol, ethylene glycol, 1-propanol and glycerol) with the single or multiple hydroxyl groupswere steam reformed, focusing on the influence of the hydroxyl group on the properties of the coke. Theresearch results showed that steam reforming of ethanol and glycerol produced more coke than that insteam reforming of 1-propanol or ethylene glycol, while the Ni/SBA-15 catalyst deactivated to a higherextent in steam reforming of ethylene glycol or glycerol with multiple hydroxyl group, due to the cokeof varied properties. The coke produced by steam reforming of ethanol and 1-propanol contained moredefective structures but more aromatic. However, the generated coke from the steam reforming of ethyleneglycol and glycerol had more aliphatic structures, especially in that from ethylene glycol. On theother hand, the carbon nanotubes formed by the steam reforming of ethanol or 1-propanol had thin wallthickness and smooth surface, while that in steam reforming of ethylene glycol and glycerol had thickwall and very rough surface, resulting from the distinct reaction intermediates formed.
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Ran Jing,Han Jin,Wei Hua,Shengwen Yang,Yiran Hu,Shu Zhang 대한심장학회 2020 Korean Circulation Journal Vol.50 No.12
Background and Objectives: Preimplantation QRS-T morphology screening (TMS) is a composite tool for selecting subcutaneous implantable cardioverter defibrillator (S-ICD) candidates. However, its role in predicting the patient's response to cardiac resynchronization therapy (CRT) is uncertain. Methods: A total of 55 consecutive de novo CRT candidates were enrolled between January 2016 and March 2017. Electrocardiogram (ECG) and TMS were performed before and soon after implantation. The ECG parameters were recorded, including QRS duration and morphology (such as ΔQRS_Index, QTc during biventricular pacing mode [BiV pacing QTc], and QRS/T ratio during biventricular pacing mode [BiV pacing QRS/T ratio]). TMS monitored three sensory vectors of the S-ICD. Six months after implantation, the responses to CRT were evaluated. Results: Thirty-nine patients (70.9%) passed the TMS during biventricular pacing mode. At the six-month follow-up, the number of responders and super-responders was significantly higher in the passing group than in the non-passing group (responders: 31/39 [79.5%] vs. 5/16 [31.3%], p<0.001; super-responders: 9/39 [23.1%] vs. 1/16 [6.3%], p=0.020). The super-response rate was higher among patients who passed all three vectors than among those who passed 1 or 2 vectors (3 vs. 2 vectors, p=0.018; 3 vs. 1 vector, p=0.003). A smaller left atrial diameter, vectors that passed TMS during biventricular pacing mode, and larger ΔQRS_Index values were independently associated with good CRT response. Conclusions: Our study demonstrated that patients on CRT who pass the TMS during biventricular pacing mode are more likely to respond and super-respond to CRT.
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